CVE-2026-20240

Denial of Service through coldToFrozen.sh Script in Splunk Enterprise

State: Published
Severity: 7.1 High
Published: May 20, 2026
Updated: May 20, 2026
Reserved: Oct 8, 2025

Description

In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	cisco

Weaknesses

CWE-20 The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.

Affected Products

Product	Versions
Splunk EnterpriseSplunk	10.2 to before 10.2.2Affected 10.0 to before 10.0.5Affected 9.4 to before 9.4.11Affected 9.3 to before 9.3.12Affected
Splunk Cloud PlatformSplunk	10.4.2603 to before 10.4.2603.1Affected 10.3.2512 to before 10.3.2512.9Affected 10.2.2510 to before 10.2.2510.11Affected 10.1.2507 to before 10.1.2507.21Affected 10.0.2503 to before 10.0.2503.13Affected 9.3.2411 to before 9.3.2411.129Affected

References

https://advisory.splunk.com/advisories/SVD-2026-0504

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